EP3322278B1 - Seed delivery apparatus - Google Patents
Seed delivery apparatus Download PDFInfo
- Publication number
- EP3322278B1 EP3322278B1 EP16825190.8A EP16825190A EP3322278B1 EP 3322278 B1 EP3322278 B1 EP 3322278B1 EP 16825190 A EP16825190 A EP 16825190A EP 3322278 B1 EP3322278 B1 EP 3322278B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- seed
- conveyor
- delivery apparatus
- seeds
- pulley
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000013019 agitation Methods 0.000 claims description 23
- 230000010006 flight Effects 0.000 claims description 15
- 238000004140 cleaning Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 description 8
- 239000002689 soil Substances 0.000 description 8
- 238000004891 communication Methods 0.000 description 5
- 230000005355 Hall effect Effects 0.000 description 3
- 238000011088 calibration curve Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000153 supplemental effect Effects 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009418 agronomic effect Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C7/00—Sowing
- A01C7/08—Broadcast seeders; Seeders depositing seeds in rows
- A01C7/10—Devices for adjusting the seed-box ; Regulation of machines for depositing quantities at intervals
- A01C7/102—Regulating or controlling the seed rate
- A01C7/105—Seed sensors
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C7/00—Sowing
- A01C7/08—Broadcast seeders; Seeders depositing seeds in rows
- A01C7/16—Seeders with other distributing devices, e.g. brushes, discs, screws or slides
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C7/00—Sowing
- A01C7/20—Parts of seeders for conducting and depositing seed
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C19/00—Arrangements for driving working parts of fertilisers or seeders
- A01C19/02—Arrangements for driving working parts of fertilisers or seeders by a motor
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C7/00—Sowing
- A01C7/04—Single-grain seeders with or without suction devices
- A01C7/042—Single-grain seeders with or without suction devices using pneumatic means
- A01C7/044—Pneumatic seed wheels
- A01C7/046—Pneumatic seed wheels with perforated seeding discs
Definitions
- FIG. 1 illustrates a side elevation view of a single row unit 10 of a conventional row crop planter such as the type disclosed in U.S. Patent No. 7,438, 006 .
- the row units 10 are mounted in spaced relation along the length of a transverse toolbar 12 by a parallel linkage 14, comprised of upper and lower parallel arms 16, 18 pivotally mounted at their forward ends to the transverse toolbar 12 and at their rearward end to the row unit frame 20.
- the parallel linkage 14 permits each row unit 10 to move vertically independently of the toolbar 12 and the other spaced row units in order to accommodate changes in terrain or rocks or other obstructions encountered by the row unit as the planter is drawn through the field.
- the row unit frame 20 operably supports a seed hopper 23, which may be adapted to receive seed from a bulk hopper (not shown), a seed meter 26, and a seed tube 28, as well as a seed trench or seed furrow opener assembly 30, and trench or furrow closing assembly 40.
- the trench opener assembly 30 comprises a pair of trench opener discs 32 and a pair of gauge wheels 34.
- the gauge wheels 34 are pivotally secured to the row unit frame 20 by gauge wheel arms 36.
- a coil spring 49 is disposed between the parallel arms 16, 18 to provide supplemental downforce to ensure that the trench opener discs 32 fully penetrate the soil to the desired depth as set by a depth adjusting member (not shown) and to provide soil compaction for proper trench formation.
- supplemental downforce may be provided by actuators or other suitable means such as disclosed in US Patent No. 6,389,999 to Duello.
- the opener discs 32 In operation, as the row unit 10 is lowered to the planting position, the opener discs 32 penetrate into the soil. At the same time, the soil forces the gauge wheels 34 to pivot upwardly until the gauge wheel arms 36 abut or come into contact with the stop position previously set with the trench depth adjusting member (not shown) or until a static load balance is achieved between the vertical load of the row unit and the reaction of the soil. As the planter is drawn forwardly in the direction indicated by arrow 39, the trench opener discs cut a V-shaped trench or furrow 60 into the soil while the gauge wheels 34 compact the soil to aid in formation of the V-shaped trench. Individual seeds 62 from the seed hopper 23 are dispensed by the seed meter 26 into an upper opening in the seed tube 28 in uniformly spaced increments. As seeds 62 fall through the seed tube 28, the seeds move downwardly and rearwardly between the trench opener discs 32 and into the bottom of the V-shaped trench 60. The trench 60 is then covered with soil and lightly compacted by the trench closing assembly 40.
- a seed conveyor 100 is illustrated in FIG. 2 .
- the seed conveyor 100 includes a belt 140 disposed around upper and lower pulleys 152,154 and preferably driven by the upper pulley 152; in other embodiments the seed conveyor may be driven by the lower pulley 154.
- the belt 140 includes flights 142.
- the seed conveyor 100 additionally includes a guide surface 110 disposed adjacent to the flights 142 on one side of the seed conveyor.
- the seed conveyor 100 preferably includes a backing plate 130 disposed to maintain the position of belt 140.
- the seed conveyor 100 receives seeds 62 from a seed disc 51 and conveys them to an exit 164.
- the seed disc 51 is preferably housed in a seed meter 26 similar to that illustrated in FIG. 1 and rotates in a direction indicated by arrow 56 about a shaft 54 rotatably mounted in the seed meter.
- the seed meter 26 is preferably of the vacuum type as is known in the art, such that a vacuum source (not shown) creates a vacuum behind the seed disc 51 (as viewed in FIG. 3 ), thus creating a pressure differential across apertures 52 in the disc.
- the pressure differential causes individual seeds 62 to become entrained on each aperture 52 such that the seeds are carried by the disc as illustrated.
- the vacuum source is substantially cut off (e.g., by termination of a vacuum seal as is known in the art) such that the seeds 62 are released from the disc as they cross axis 196.
- Seeds 62 preferably fall from the disc in a substantially vertical fashion along an axis 192.
- Guide surface 110 includes an angled portion 112, along which each seed 62 slides downward and rearward before passing between two flights 142 at a seed inlet generally indicated by reference numeral 162. Each seed 62 is then conveyed downward by seed conveyor 100.
- the belt 142 is preferably driven at a speed proportional to the groundspeed of the row unit 10 designated by reference “St" ( FIG. 4 ).
- the seed conveyor 100 is driven such that the linear speed of belt 142 at the bottom of the lower pulley 154 is approximately equal to the groundspeed St.
- each seed 62 is initially accelerated downward by the flight 142 above the seed.
- FIG. 4 as each seed 62 moves downward along the seed conveyor 100, it may fall away from the flight 142 above it. However, as each seed 62 nears the bottom of the seed conveyor, the flights 142 accelerate in order to travel around lower pulley 154 such that the flights 142 contact the seed and impart a rearward horizontal velocity to the seed. Additionally, an angled portion 114 of the guide surface 110 guides the seed rearward, imparting a rearward horizontal velocity to the seed.
- the seed has a downward vertical velocity component Vy and a horizontal velocity component Vx, the magnitude of which is less than the speed of travel St of the row unit 10. It should be appreciated that a smaller horizontal velocity component Vx is preferable because the seed 62 will experience less fore-aft roll as it lands in the trench 60, leading to more uniform seed placement.
- the angled portion 114 preferably is disposed 20 degrees below horizontal.
- flights 142 travel faster as they travel around the upper end of upper pulley 152, e.g., above an axis 194. Additionally, the flights 142 have a substantial horizontal velocity component above axis 194. As a result, attempting to introduce seeds 62 between the flights above axis 194 may result in seeds being knocked away from the belt 140.
- the seed inlet 162 at which seeds 62 pass between flights 142 is preferably below the axis 194. This result is preferably accomplished by positioning of the axis 196 at which seeds are released from the disc 51 below the axis 194 and/or by configuring angled portion 112 of guide surface such that seeds 62 slide below axis 194 before entering the inlet 162.
- a seed conveyor 100 is illustrated in cooperation with a row unit 10.
- the row unit 10 includes a shank portion 35.
- the seed conveyor 100 is mounted to the shank portion 35 by attachment ears 106,108.
- the control system 1000 includes a planter monitor 1005.
- the planter monitor 1005 preferably includes a CPU and user interface, and may comprise a monitor such as that disclosed in Applicant's U.S. Patent No. 8,078,367 .
- the planter monitor 1005 is preferably in electrical communication with a seed conveyor motor 1020.
- the seed conveyor motor 1020 is operably coupled to the seed conveyor 100 to drive the seed conveyor.
- the seed conveyor motor 1020 includes a driven output shaft mechanically coupled to a central shaft of the upper pulley 154 or the lower pulley 152.
- the seed conveyor 1020 preferably includes an encoder (e.g., a hall-effect sensor) for sensing the rotational speed of the conveyor 100.
- the planter monitor 1005 is preferably in electrical communication with a meter drive motor 27.
- the meter drive motor 27 may comprise any apparatus known in the art for driving seed meters at a desired speed such as a hydraulic drive or electric drive.
- the meter drive motor 27 may comprise an electric motor mounted on or near the seed meter 26, the electric motor having an output shaft operably coupled to the shaft 54 of the seed meter; in such an embodiment, the meter drive motor 27 preferably includes an encoder (e.g., a hall-effect sensor) for sensing the rotational speed of meter 50.
- the planter monitor 1005 is also preferably in electrical communication with a speed source 1010.
- the speed source may comprise a GPS system, a radar speed sensor, or a wheel speed sensor.
- the planter monitor may choose between multiple speed sources by predicting reliability as disclosed in Applicant's International Patent Publication No. WO 2012/015,957 .
- the planter monitor is preferably in electrical communication with one or more seed sensors adapted for mounting to the seed conveyor 100.
- the seed sensors may comprise one or more seed sensors.
- the seed sensors may also be in electrical communication with the meter drive motor 27 and the seed conveyor motor 1020.
- FIG. 16 shows an embodiment of a seed sensor 1600 comprising a plurality of transmitters 1610-1, 1610-2, and 1610-3 transmitting to an associated plurality of receivers 1620-1, 1620-2, and 1620-3.
- the signals received at the plurality of receivers can be averaged.
- the percent transmittance between each pair of transmitter and receiver can be measured and then weighted based on the percent transmittance and then the weighted results can be averaged.
- FIG. 6 one embodiment of a planter monitor control system 1000 is illustrated.
- the planter monitor control system 1000 of FIG. 6 includes a seed sensor 550 mounted to the sidewalls of the seed conveyor 100.
- the meter drive motor 27 in the planter monitor control system 1000 of FIG. 6 comprises an electric drive.
- the speed St of seed conveyor 100 is generally to the left along the perspective of FIG. 6 and has a magnitude which varies with the speed and direction of the planting implement.
- a process 1100 for controlling the rotational speed of the seed conveyor 100 is illustrated in FIG. 7 .
- the planter monitor 1005 obtains a speed of the planting implement from the speed source 1010.
- the planter monitor 1005 preferably obtains the current commanded planting population (i.e., the number of desired seeds planted per acre) from a memory contained within the planter monitor 1005.
- the planter monitor 1005 preferably commands a rotational speed of meter 50 based on the desired population and the current implement speed.
- the planter monitor 1005 preferably determines an operating speed of the seed conveyor 100. This step may be accomplished using a Hall-effect or other sensor adapted to measure the driving speed of the electric motor or the rotational speed of the driven shaft of the seed conveyor 100. This step may also be accomplished by measuring the time between flights 142 passing the seed sensor 550. It should be appreciated in light of the instant disclosure that step of block 1110 does not require measuring an actual operational speed but may comprise measuring a criterion related to the operational speed.
- the planter monitor 1005 preferably determines the ground speed St of the seed conveyor 100. In some embodiments, this step may be accomplished by assuming that the tractor or implement speed reported by the speed source 1010 is equal to the ground speed St of the seed conveyor 100. Such a method is accurate when the tractor and toolbar 12 are not turning, but becomes inaccurate when the tractor and toolbar 12 are turning. In other embodiments the step of block 1500 may be performed more accurately by determining the local ground speed St of each conveyor 100 along the toolbar 12. Such embodiments are described herein in the section entitled "Conveyor Ground Speed Determination.”
- the planter monitor 1005 preferably determines a conveyor motor speed command, e.g., using a calibration curve.
- the calibration curve preferably relates the ground speed St to a desired operational speed So. It should be appreciated in light of the instant disclosure that the calibration curve could also relate a criterion related to ground speed (such as a measured voltage or commanded voltage) to a criterion related to a desired conveyor speed (such as a measured voltage or commanded voltage).
- the planter monitor 1005 preferably commands the new desired conveyor speed. It should be appreciated in light of the instant disclosure that the change in conveyor speed command may be deferred until the actual conveyor speed is outside of a preferred range, e.g. 5%, with respect to the desired conveyor speed.
- FIGs. 9-10 another embodiment of a seed conveyor assembly 900 is illustrated.
- loading wheels 910, 920 are driven in opposing directions in order to grasp seeds from the seed disc of the seed meter and eject the seeds between flights 932 of a conveyor 930 (e.g., an endless conveyor) housed within a housing 980.
- the conveyor 930 comprises a flighted belt as illustrated in FIGs. 9-10 .
- the conveyor 930 may comprise other structure suited to convey seeds from an upper to lower position such as a brush belt having a plurality of bristles for receiving seeds.
- FIGs. 9 and 10 likewise illustrate an upper pulley 950 about which the conveyor 930 is driven in operation.
- a cleaning strip 970 is disposed adjacent (e.g., directly axially adjacent) to the upper pulley 950.
- the cleaning strip 970 preferably extends radially outwardly from the pulley 950.
- the cleaning strip 970 is preferably arcuate.
- the cleaning strip 970 preferably extends arcuately forwardly along the direction of rotation of the pulley 950 (e.g., counter-clockwise on the view of FIG. 9 ).
- An upper end of the cleaning strip 970 is preferably adjacent to a radially outer surface of a hub portion 959 ( FIG. 11 ) of the pulley 950.
- mud or other debris is preferably scraped from the pulley 950 by contact with the cleaning strip 970 as the pulley rotates adjacent to the cleaning strip 970.
- an agitation strip 960 is illustrated.
- the agitation strip 960 is preferably substantially parallel with (and preferably substantially flush with) an interior wall 982 of the housing 980.
- the agitation strip 960 preferably includes a plurality of agitation elements 962 which may be arranged in rows 964 (e.g., diagonally-oriented rows as illustrated in FIG. 10 ).
- the agitation strip 960 is preferably disposed adjacent to a portion of the conveyor 930 in which seeds are conveyed, e.g., between an entry point at which seeds are introduced by the loading wheels 910, 920 and a release point at which seeds are released from the conveyor into a planting trench.
- the agitation strip 960 is preferably disposed adjacent to a portion of the conveyor 930 in which seeds are conveyed prior to being sensed by a seed sensor, e.g., between the entry point at which seeds are introduced by the loading wheels 910, 920 and a sensing point at which seeds are detected by a seed sensor.
- the agitation elements 962 preferably extend toward the conveyor 930. A distal end of each agitation element 962 is preferably directly adjacent to a distal end of the passing flights 932.
- a seed may occasionally become trapped between the distal end of a flight 932 and an interior wall 982 of the housing 980 after being introduced into the conveyor 930.
- the trapped seed is preferably moved toward and across the surface of the agitation strip 960.
- the trapped seed is preferably agitated (e.g., vibrated, moved) and dislocated from between the flight 932 and the interior wall 982.
- a partially vertically upward force between the seed and one or more agitation elements preferably urges the seed into one of the flight gaps 933 between the flights of the conveyor 930, preferably the flight gap directly vertically above the flight that had trapped the seed.
- the agitation strip 960 preferably comprises an elastic material (e.g., rubber, polyurethane).
- the agitation strip 960 is preferably removable, preferably without the use of tools.
- the agitation strip 960 may be replaced with a one of a plurality of replacement agitation strips.
- Each replacement agitation strip may differ from the other replacement agitation strips in one or more of the following criteria: (1) agitation element height, (2) agitation element shape, (3) agitation element number, (4) configuration (e.g., pattern) of agitation elements, or (5) material type or properties (e.g., elasticity).
- a seed guide 940 having a relief portion 942 and an introduction portion 944.
- the relief portion 942 is preferably disposed radially farther from the pulley 950 (and preferably farther from the conveyor 930) than the introduction portion 944.
- the relief portion 942 is preferably arcuate, and preferably extends arcuately along a path substantially parallel to the path of a flight 932 passing the relief portion in operation of the conveyor 930. In operation, seeds may slide along the relief portion 942 before contacting the introduction portion 944.
- the seed Upon contacting the introduction portion 944, the seed is preferably translated (e.g., bumped, urged, forced) in a direction toward the conveyor 930 and is preferably introduced into a flight gap 933 by contact with the introduction portion 944.
- the pulley 950 preferably includes a first set of radially arranged pulley teeth 952-1 and a second set of radially arranged pulley teeth 952-2.
- the pulley teeth 952-1 are preferably separated by a pitch angle B (e.g., 60 degrees).
- the pulley teeth 952-2 are preferably separated by the same pitch angle B (e.g., 60 degrees).
- the first set of drive teeth 952-1 and the second set of drive teeth 952-2 are preferably offset from one another by an angular offset A.
- the angular offset A is preferably one-half of the angular pitch B (e.g., 30 degrees).
- the first and second sets of pulley teeth are preferably laterally offset by a rim 958.
- the pulley teeth 952 preferably engage belt gaps 934 disposed between belt teeth 936 to drive the conveyor 930 about the pulley 950.
- the belt gaps 934 are preferably spaced such that sequential belt gaps 934 along the conveyor 930 are alternatingly engaged by pulley teeth 952-1 and 952-2.
- a first belt gap 934 is engaged by a first pulley tooth of the pulley tooth set 952-1, then a second belt gap 934 (e.g., the next belt gap following the first belt gap) is engaged by a first pulley tooth of the pulley tooth set 952-2, then a third belt gap 934 (e.g., the next belt gap following the second belt gap) is engaged by a second pulley tooth of the pulley tooth set 952-1, then a fourth belt gap 934 (e.g., the next belt gap following third belt gap) is engaged by a second pulley tooth of the pulley tooth set 952-2, and so-on.
- pulley gaps 954-1 and 954-2 between the two sets of pulley teeth 952-1, 952-2 are similarly alternatingly engaged (e.g., non-drivingly engaged) by belt teeth 936.
- the rim 958 is preferably partially received in a longitudinal slot (not shown) provided along the inner side of the conveyor 930 a laterally central position along the length of the conveyor. It should be appreciated that although the pattern of belt teeth 936 and belt gaps 934 are illustrated only along the right hand side of the conveyor 930 (see FIG. 9 ), in preferred embodiments this pattern continues along the length of the conveyor.
- FIG. 14 is a side elevation view of another embodiment of a seed conveyor 900A which is substantially the same as in the previous embodiment of the seed conveyor 900 shown in FIG. 9 , except that in the embodiment of FIG. 14 , the seed conveyor 900A utilizes a loading wheel 910A having sinusoidal shaped fingers 911 as best shown in FIG. 15 .
- the sinusoidal shape of the fingers 911 allows for more compression of the fingers 911 when there are larger seeds thereby minimizing potential clogging of the loading wheel 900A.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Sowing (AREA)
- Pretreatment Of Seeds And Plants (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201562192309P | 2015-07-14 | 2015-07-14 | |
PCT/US2016/042309 WO2017011675A1 (en) | 2015-07-14 | 2016-07-14 | Seed delivery apparatus, systems, and methods |
Publications (3)
Publication Number | Publication Date |
---|---|
EP3322278A1 EP3322278A1 (en) | 2018-05-23 |
EP3322278A4 EP3322278A4 (en) | 2019-03-27 |
EP3322278B1 true EP3322278B1 (en) | 2020-05-27 |
Family
ID=57757528
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16825190.8A Active EP3322278B1 (en) | 2015-07-14 | 2016-07-14 | Seed delivery apparatus |
Country Status (13)
Country | Link |
---|---|
US (3) | US10765057B2 (lt) |
EP (1) | EP3322278B1 (lt) |
CN (1) | CN108135125B (lt) |
AR (1) | AR105356A1 (lt) |
AU (3) | AU2016294607C1 (lt) |
BR (1) | BR112018000663B1 (lt) |
CA (3) | CA2992124C (lt) |
LT (1) | LT3322278T (lt) |
MX (2) | MX2018000482A (lt) |
RU (2) | RU2711943C2 (lt) |
UA (1) | UA121057C2 (lt) |
WO (1) | WO2017011675A1 (lt) |
ZA (1) | ZA202006368B (lt) |
Families Citing this family (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8850995B2 (en) | 2009-02-02 | 2014-10-07 | Deere & Company | Seeding machine with seed delivery system |
US8671856B2 (en) | 2009-02-02 | 2014-03-18 | Deere & Company | Planting unit for a seeding machine having blocking member to control hand-off of seed from a seed meter to a seed delivery system |
LT3319412T (lt) | 2015-07-10 | 2020-11-10 | Precision Planting Llc | Sėklų rūšies pasirinkimo aparatas |
CN110325029B (zh) | 2016-11-16 | 2022-10-28 | 精密种植有限责任公司 | 种子传递装置 |
CZ307711B6 (cs) * | 2017-09-16 | 2019-03-06 | Farmet A.S. | Zařízení k jednocení osiva |
US10750662B2 (en) | 2018-06-01 | 2020-08-25 | Deere & Company | Seed sensor |
US11064649B2 (en) | 2018-06-27 | 2021-07-20 | Deere & Company | Seeding system |
US11058047B2 (en) | 2018-06-27 | 2021-07-13 | Deere & Company | Seeding system |
US11051445B2 (en) | 2018-06-27 | 2021-07-06 | Deere & Company | Seeding system |
BR102019001328A2 (pt) * | 2019-01-23 | 2020-08-04 | José Roberto do Amaral Assy | Dispositivo de captura de sementes para dosador de sementes, sistema de singularização e dispensação de sementes e sistema de sincronização de meio de transporte de sementes para dosador de sementes |
CN110710361B (zh) * | 2019-11-15 | 2021-11-02 | 南京农业大学 | 一种支持小麦精确播种的窝眼轮式排种装置及其播种方法 |
US11483963B2 (en) | 2019-12-24 | 2022-11-01 | Cnh Industrial America Llc | Particle delivery system of an agricultural row unit |
US11564346B2 (en) | 2019-12-24 | 2023-01-31 | Cnh Industrial America Llc | Particle delivery system of an agricultural row unit |
US11553639B2 (en) | 2019-12-24 | 2023-01-17 | Cnh Industrial America Llc | Particle delivery system of an agricultural row unit |
US11523556B2 (en) | 2019-12-24 | 2022-12-13 | Cnh Industrial America Llc | Particle delivery system of an agricultural row unit |
US11523555B2 (en) | 2019-12-24 | 2022-12-13 | Cnh Industrial America Llc | Particle delivery system of an agricultural row unit |
US11596095B2 (en) | 2019-12-24 | 2023-03-07 | Cnh Industrial America Llc | Particle delivery system of an agricultural row unit |
US11564344B2 (en) | 2019-12-24 | 2023-01-31 | Cnh Industrial America Llc | Particle delivery system of an agricultural row unit |
US11490558B2 (en) | 2019-12-24 | 2022-11-08 | Cnh Industrial America Llc | Particle delivery system of an agricultural row unit |
US11589500B2 (en) | 2019-12-24 | 2023-02-28 | Cnh Industrial America Llc | Particle delivery system of an agricultural row unit |
US11582899B2 (en) | 2019-12-24 | 2023-02-21 | Cnh Industrial America Llc | Particle delivery system of an agricultural row unit |
US11553638B2 (en) | 2019-12-24 | 2023-01-17 | Cnh Industrial America Llc | Particle delivery system of an agricultural row unit |
US11516958B2 (en) | 2019-12-24 | 2022-12-06 | Cnh Industrial America Llc | Particle delivery system of an agricultural row unit |
AU2022365463A1 (en) | 2021-10-11 | 2024-03-14 | Precision Planting Llc | Seed accelerator |
AU2022364251A1 (en) | 2021-10-12 | 2024-03-28 | Precision Planting Llc | Wedge |
WO2023062476A1 (en) | 2021-10-12 | 2023-04-20 | Precision Planting Llc | Seed boot |
GB202114712D0 (en) | 2021-10-14 | 2021-12-01 | Prec Planting Llc | Seed accelerator |
GB202114711D0 (en) | 2021-10-14 | 2021-12-01 | Prec Planting Llc | Seed accelerator |
GB202115117D0 (en) | 2021-10-21 | 2021-12-08 | Prec Planting Llc | Seed boot |
WO2024052793A1 (en) | 2022-09-09 | 2024-03-14 | Precision Planting Llc | Notched opener discs |
GB202400397D0 (en) | 2024-01-11 | 2024-02-28 | Prec Planting Llc | Seeding system |
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